What is 9 superscript 7 written in expanded form? 9 + 9 + 9 + 9 + 9 + 9 + 9 9 times 9 times 9 times 9 times 9 times 9 times 9 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 7 times 7 times 7 times 7 times 7 times 7 times 7 times 7 times 7

Which is an equation for the nth terms of the sequence 12,15,18,21

Solve the system of equations. y= 2x y= x^2 - 15

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?